//BookDaoImpl.java
package com.ylaihui.dao.impl;

import com.ylaihui.dao.BookDao;
import com.ylaihui.pojo.Book;

import java.util.List;

public class BookDaoImpl extends BaseDao implements BookDao {
    @Override
    public int addBook(Book book) {
        String sql = "insert into t_book(`name`,`author`,`price`,`sales`,`stock`,`img_path`) values(?,?,?,?,?,?);";
        return update(sql, book.getName(), book.getAuthor(), book.getPrice(), book.getSales(), book.getStock(), book.getImgPath() );
    }

    @Override
    public int deleteBookById(Integer id) {
        String sql = "delete from t_book where `id` = ?";
        return update(sql, id);
    }

    @Override
    public int updateBook(Book book) {
        String sql = "update t_book set `name`=?,`author`=?,`price`=?,`sales`=?,`stock`=?,`img_path`=? where id = ?";
        return update(sql, book.getName(),book.getAuthor(),book.getPrice(),book.getSales(),book.getStock(),book.getImgPath(),book.getId());
    }

    @Override
    public Book queryBookById(Integer id) {
        String sql = "select `id` , `name` , `author` , `price` , `sales` , `stock` , `img_path` imgPath from t_book where id = ?";
        return queryForOne(Book.class, sql, id);
    }

    @Override
    public List<Book> queryBooks() {
        String sql = "select `id` , `name` , `author` , `price` , `sales` , `stock` , `img_path` imgPath from t_book";
        return queryForList(Book.class, sql);
    }

    /**
     * 查询总记录条数
     * @return
     */
    @Override
    public Integer queryTotalCount() {
        String sql = "select count(*) from t_book";
        Number value = (Number)queryForSingleValue(sql);
        return value.intValue();
    }

    /**
     * 查询指定页的数据
     * @param begin
     * @param pageSize
     * @return
     */
    @Override
    public List<Book> queryPageItems(int begin, int pageSize) {
        String sql = "select `id` , `name` , `author` , `price` , `sales` , `stock` , `img_path` imgPath from t_book limit ?, ?";
        return queryForList(Book.class, sql, begin, pageSize);
    }

    @Override
    public Integer queryTotalCountByPrice(int min, int max) {
        String sql = "select count(*) from t_book where price between ? and ?";
        Number value = (Number)queryForSingleValue(sql, min, max);
        return value.intValue();
    }

    @Override
    public List<Book> queryPageItemsByPrice(int begin, int pageSize, int min, int max) {
        String sql = "select `id` , `name` , `author` , `price` , `sales` , `stock` , `img_path` imgPath from t_book where price between ? and ? order by price limit ?, ?";
        return queryForList(Book.class, sql, min, max, begin, pageSize);
    }

}
